Shnoop via eBay offers the Canon EF 75-300mm f/4-5.6 III Telephoto Zoom SLR Lens, model no. 6473A003, for $89.49 with free shipping. That's about a buck under our mention from four days ago and the lowest total price we've seen. (It's the best deal now by $17.) This lens uses a DC motor to drive the autofocus and features 13 elements in nine groups, a 4.9-foot minimum focus distance, and 58mm filter.
A close price: (Celltime Inc via eBay charges about a buck more.)